Permutation-lock



(No Model.) K. MAG

UTATION No.' 425,893. Patented Apr. 15, 1890.

'NH UU/II UNITED* STATESv PATENT OFFICE.,

JAMES K. MAGIE, OF CHICAGO, ILLINOIS.'

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 425,893, dated April 15, 1890.

Application inea Beamter 19,1889. seria No. 334,288. (No moda.)

To all whom, it 11u01/ concern:

Be it known that I, J AMES K. MAGIE, of Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Permutation-Locks;y and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanyingV drawings, which form part of this specification.

My invention relates to an improvement in permutation-locks and it consists in the combination and arrangement of parts hereinafter described, and pointed out in the claims.

The object of my invention is to produce a permutation-lock which can be readily operated in the dark, as well as in the light, by one who is familiar with the combination, to combine with a permutation-lock having locking-wheels and a sliding frame a pivoted bolt, and to produce a lock which is cheap and simple in construction, which cannot be operated by any but those who know the combination, and in whichthe parts are not liable to get out of order.

Figure l is a front view of the lock. Fig. 2 is a rear view. Fig. 3 is la View of the internal mechanism, the rear plate of the lock being removed. Fig. t is a vertical section taken through one of the spindles.

A represents the front of a door, drawer, or any other object to which the lock is to be applied. Passing through small holes made specially for the purpose are threevv spindles B, and secured rigidly to their outer ends, so

-as to revolve therewith, are the disks or plates D. The holesl made for the passage of these spindles through the front of the drawer or door are just large enough to allow the spindles to pass through, and thus the lock can be applied to a drawer without the necessity of having to disigure it in any manner. To the inner end of each of these spindles, inside of the lock-frame, is secured a locking-wheel C, and each one of these wheels is made separate and distinct from its spindle and is secured thereto by means of a setserew E, which is passed through the collar or flange formed upon the wheel outside of the rear plate of the lock. There is one of these locking-wheels for each one of the spindles used, and all of these -wheels are placed inside of a sliding frame F, which is moved Ain one direction by the spring G, which is applied to its lower or inner edge, and in the opposite direction by means of the partiallyturning bolt H. When all of these wheels are turned so Ythat their recessed or cut-away edges are in a line with each other at the top of the frame, the partially-turning bolt can be turned upon its pivot for the purpose of locking or unlocking the door or drawer to which the lock is applied. Should any one of these wheels be turned so that its recessed or cut-away edge does not come in a line with the other locking-wheels, the frame cannot be moved in either direction. These Wheels are made adjustable upon the spindles, so that the combination can be changed at the will of the operator by simply loosening the fastening-screws which secure them to their spindles, and then turning the spindle into any desired position, so as to form another combination.

As will be seen, the locking-bolt is pivoted so as to have a partially-turning movement, like the bolt of an ordinary lock, and can be operated when the locking-wheels are in their proper position like an ordinary key-lock without bringing the combination into play. In order to do this, the combination must of course be known, and the wheels must be turned into the proper position. Each one of the disks D, secured to the outer end of one of the spindles, rests in direct contact with a plate L, and this plate L is held in position against the front of the door or drawer by all the spindles, which pass freely through it. These disks themselves serve simply as a means for turning the spindles, but perform no other work. Around the outer edge of each of these disks is formed a shoulder N, and these shoulders catch inside of a plate O, which is secured to the front of the door or drawer by means of the bolts which secure the inside lock in position. This plate has openings through it corresponding to the number of disks used, andthis plate catches against the outer edges of the shoulders, so as to prevent any of the spindles from being drawn outward or the disks from becoming dis- IOO placed. A s shown, these disks are flush with this plate, and in the plate around the edge of the opening in which the disks revolve are formed the marks, figures, or other designs which may be used to show' the different com` binations. There may be any desired nulnber of these marks or figures; but as here shown only twelve are used in connection with each disk, and these twelve marks or iigures correspond to the hours of the day. A person knowing the combination and wishing to find it in the dark has but to turn all of the disks to twelve, and then by turning the disks and keeping a count of'the perforations in the plate placed inside of thedisks he can find the combination in the dark. This is a great convenience to those using locks of this nature upon 1neney-drawers, or who have occasion to open thedrawer during the night yor when they have no light with them. Projecting from near the outer edge of each of these disksis a headed pin, stud, or projecticniP, and placed upon eachof these pins, studs, or projections is a small knob or handle Q, which has a free endwise play upon the stud, pin, or projection as .far as the head this knob is drawn outward as far as the will allow. Projecting from the inner side of. eachof these knobs or handles to one side of the center is a pin R, and this pin passes through a hole made in the disk and engages with the perforations in the plate resting against the side of the drawer or door. When headed pin or projection will allow, the pin R is withdrawn from the perforation in the per forated plate, and then the disk is free to be turned by this knob or handle in either direction. When, however, the knob or handle is forced inward, this pin R catches in onel of the perforations in this perforated plate and locks the disk in position, so as to prevent it from being accidentally moved While thefcombination is being found upon the other disk, and to prevent the combination from being changed at any time while the bolt is being operated like an ordinary keyl lock.

When itis `desired to change the combination, the screws which secure the lockingwheels to the spindles are loosened after the locking-wheels have been turned in their proper position to allow the bolt to be moved,

and then while these locking-platesare stillf free from the spindles the disks and the spindles are revolved into any desired position.

After having adjusted thedisks upon the numbers which are to form the combination,

the screws are again tightened, so as to lock the plates to the spindles, and thus a new combination is produced.

:screw which locks the locking-plate' to the spindle. Another advantage is that only small holes have to be made through the door orfdrawer to allow the passage of the bolts whichsecure the lock in position and to pass the spindles through. The consequence is that after the lock is emoved from the drawer these small holes can be plugged up and no disiguration of the'drawer can be noticed.`

For the sakeof` convenience, a pivoted or swinging handle or bail ,T is attached to the lock, so as to act as a` drawer pull or handle in opening the drawer or door. Any other form of device may be used that may be desired. It is to be distinctly understood that there may be any desired number of `perforations inthe perforated plate, and thus the number of combinations can be increased indefinitely. Only' three spindles and lockingplates are here shown;. but any desired number can be used. Inadapting my invention to trunks, desks, or articles Where the lid is raised the catch or bar is formed with a hook, as shown, which enters into and combines with an eye attached to the lid, preventing it Afrom being raised until the combination is used and the hook is released from the eye.

Having thus described my invent-ion, I 'claim-f l. The combination lof the spindles, the locking-wheels secured thereto, the sliding spring-actuated frame, and the partially-tu rning bolt, substantially as described.

2. The combination of the spindles, the locking-plates secured thereto, the sliding frame and the partially-turning bolt with the perforated' plate, the disks secured to the spindles, and the endwise-moving knobs 0r handles applied to the disks and provided with pins which engage with the perforations in the plate, substantially as set forth.

3. The combination of the` spindles, the locking-wheels secured thereto, the` sliding frame and the bolt, with the disks securedto the outer ends `of the spindles and provided with shoulders, and a perforated plate which iits over the disks and holds them 4in posi'- tion, substantially as specifi d.

d In testimony whereof I airg my signature in presence of two witnesses. A

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